This week, we take an up-close look at what will be the most-advanced telescope ever to launch into space, the James Webb Space Telescope. We welcome Scott Lambros, Instrument Systems Manager for this remarkable instrument, back to the show!But first, we look at new evidence for volcanic eruptions on Mars in the surprisingly-recent past. We also head out to the distant void of space as Voyager 1 detects a faint hum which could help us better understand interstellar space. Finally, we turn our sights to the James Webb Space Telescope as it unfurls its massive mirror for the final time on Earth, before talking with our special guest, who just returned from conducting the tests.This episode is dedicated to the memory of Apollo 11 astronaut Michael Collins. Thanks for exploring the Cosmos, and liking a couple of my posts - that was awesome.Listen to the podcast here, or watch the video version of this episode at: https://youtu.be/_yP_eddfaJQ--- Send in a voice message: https://anchor.fm/the-cosmic-companion/messageSupport this podcast: https://anchor.fm/the-cosmic-companion/support Get full access to The Cosmic Companion at thecosmiccompanion.substack.com/subscribe